The Electrons for Photosynthesis Come from ____

Question

The electrons for photosynthesis come from ____. A) ATP B) electrolytes C) NADP⁺ D) chlorophyll a E) H2O

Accepted Answer

The electrons used for photosynthesis come from water molecules, which are split during the light-dependent reactions of photosynthesis. These electrons are then transferred to electron carriers like NADP+ to be used in the light-independent reactions (Calvin cycle) for the synthesis of glucose. Choices A, B, and D are not sources of electrons for photosynthesis, and NADP+ is an electron carrier, not a source of electrons.